US MARINE CORPS
William Vincent St Cyr
June 30, 1930—March 16, 1997
SGT
Life Timeline
66 years1930
Born
June 30, 1930
US MARINE CORPS
Service Record
Korean War
Korean War
Conflict
SGT
1997
Passed Away
March 16, 1997
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
SGT
War / Conflict
Korean War
Sourced from official cemetery data; last updated May 30, 2026.Learn more